ASTROSAT CZTI

Data Quality Report

Orbit 35048

Creation date: 2022-03-23T08:53:00.895701
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_123T17_9000005018_35048cztM0_level2.evt modeM0/AS1A10_123T17_9000005018_35048cztM0_level2_quad_clean.evt
Size (bytes)1,350,057,600279,043,200
Size1.3 GB 266.1 MB
Events in quadrant A7,831,7891,881,686
Events in quadrant B8,736,1631,880,878
Events in quadrant C8,535,0611,864,740
Events in quadrant D14,699,7591,716,050

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334774
B0360763
C0344563
D0550543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03240
B03240
C03240
D03240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16093190.118064%
B160932131.323557%
C16093450.279625%
D160939145.679488%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 21561 16096 1 1 0.00% 0.01%
B 21561 16096 161 161 0.75% 1.00%
C 21561 16096 31 31 0.14% 0.19%
D 21561 16096 867 867 4.02% 5.39%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 150122 379.7 1967 1931 390.3
A 10 255 34817 84.26 1967 1931 390.3
A 13 6 29046 69.47 1967 1931 390.3
B 5 172 521558 1439.34 1930 1879 361.1
B 5 200 316883 872.46 1930 1879 361.1
B 0 190 149830 409.77 1930 1879 361.1
C 15 214 655496 1494.07 1921 1939 437.4
C 14 67 163776 369.97 1921 1939 437.4
C 0 10 162612 367.31 1921 1939 437.4
D 8 195 2877088 6354.62 1882 1832 452.5
D 13 249 1441161 3181.07 1882 1832 452.5
D 14 52 1164061 2568.65 1882 1832 452.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter